Pat the chicken pieces dry with paper towels.
Optional: Sauté aromatics. Heat oil in a skillet, add onion and cook until softened. Add garlic and ginger, cook until fragrant.
Place chicken in the slow cooker. Add sautéed aromatics (if prepared), or chopped onion, minced garlic, and ginger directly to the slow cooker.
In a bowl, whisk together soy sauce, brown sugar, coconut milk, coriander, cumin, turmeric, cinnamon, and red pepper flakes. Pour over chicken.
Cook on low for 6-8 hours, or on high for 3-4 hours, until chicken is cooked through and very tender.
Optional: Remove chicken and shred with forks. Return shredded chicken to the sauce.
Stir in fresh lime juice.
Serve over rice, noodles, or your favorite sides. Garnish with cilantro, green onions, and lime wedges if desired.